Rule library
FatalSales Comparable #n
UAD1477 — Provide at least one data source for each sales comparable. In the UAD XML, a minimum of one RELATIONSHIP container must be included that links DATA_SOURCE to PROPERTY (@ValuationUseType = 'SalesComparable'). For assistance with this message, contact the appraisal software vendor.
Where this rule lives in the report
Does Not Display
Does Not Display
Does Not Display
Report Section and Report Subsection as the GSEs define them — the black tab and grey bar you already read on the URAR.
- Severity
- Fatal — this blocks your UCDP submission and must be fixed before delivery.
- Triggered when
SalesComparisonApproachIndicator = "true" and there is no instance of RELATIONSHIP with @xlink:arcrole = "urn:fdc:mismo.org:2009:residential/DATA_SOURCE_IsDataSourceFor_PROPERTY" that links DATA_SOURCE to PROPERTY where @ValuationUseType = "SalesComparable"- Data Point Name
@xlink:arcrole- Unique ID
1800.0374
How to fix UAD1477
UAD1477 is a Fatal UAD 3.6 edit, so clear it before the appraisal report goes to UCDP.
- 01Open the Does Not Display › Does Not Display › Does Not Display area of the URAR and find Does Not Display.
- 02Check the condition that triggers UAD1477: SalesComparisonApproachIndicator = "true" and there is no instance of RELATIONSHIP with @xlink:arcrole = "urn:fdc:mismo.org:2009:residential/DATA_SOURCE_IsDataSourceFor_PROPERTY" that links DATA_SOURCE to PROPERTY where @ValuationUseType = "SalesComparable".
- 03Correct the missing, invalid, duplicate, or inconsistent value before submitting to UCDP.
- 04Re-run validation after the change so conditional downstream edits are checked again.
This fix guidance is derived from the published rule message, trigger logic, report location, field definition, and official sample data available for this rule.